Hint

Answer

a vacuum

lines 1-2: Incandescent light bulbs and old-fashioned television and radio tubes contain a vacuum.
lines 3-4: Sound cannot travel through a vacuum.
lines 5-6: Light can travel through a vacuum.
lines 7-10: In a vacuum, at the quantum (subatomic) level, matter and antimatter in the form of virtual particles are continuously being created and then almost immediately collide with each other, destroying themselves.Hide